Paper Title:
Analysis of Hydrogen Diffusion in Notched High-Strength Steel Wires
  Abstract

Fick's laws were used to model the hydrogen diffusion in notched high-strength steel wires loaded in tension under elastic-plastic conditions. The plastic deformation at the notch tip has an effect on the peak distribution of the hydrostatic stress ( h σ ). So, in stress-assisted diffusion analysis, elastic-plastic material behavior should be considered. Coupled diffusion elastic-plastic finite element analysis was implemented in the finite element program ABAQUS using the user element subroutine (UEL) and the coupled temperature-displacement solver routine to solve the variational form of the diffusion equation in order to obtain the hydrogen concentration distribution ahead of the notch tip in high-strength steel wires under plane strain conditions. The analysis results are compared with those obtained from elastic analysis, which shows that, if a critical hydrogen concentration is regarded as a local fracture criterion, the elastic-plastic analysis results can be used to evaluate the hydrogen embrittlement of high-strength steel wires.

  Info
Periodical
Key Engineering Materials (Volumes 340-341)
Edited by
N. Ohno and T. Uehara
Pages
1339-1344
DOI
10.4028/www.scientific.net/KEM.340-341.1339
Citation
L. Bing, "Analysis of Hydrogen Diffusion in Notched High-Strength Steel Wires", Key Engineering Materials, Vols. 340-341, pp. 1339-1344, 2007
Online since
June 2007
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jesús Toribio, Viktor Kharin, Diego Vergara, Miguel Lorenzo
Abstract:Hydrogen diffusion within a metal or alloy is conditioned by the stress-strain state therein. For that reason it is feasible to consider that...
33
Authors: Alexander K. Belyaev, Vladimir A. Polyanskiy, Yuriy A. Yakovlev
Chapter 5: Continuum Constitutive Modelling and Scale Transition Modelling
Abstract:A two-continua model is constructed which allows one to describe the kinetics of hydrogen in metals. The developed rheological model is...
604